Re: [dpdk-dev] [PATCH v2 0/2] net: add CRC run-time checks and AVX512/VPCLMULQDQ based CRC

["O'loingsigh, Mairtin" <mairtin.oloingsigh@intel.com>]

Hi,

> -----Original Message-----
> From: O'loingsigh, Mairtin <mairtin.oloingsigh@intel.com>
> Sent: Tuesday, September 29, 2020 4:13 PM
> To: Singh, Jasvinder <jasvinder.singh@intel.com>; Richardson, Bruce
> <bruce.richardson@intel.com>; De Lara Guarch, Pablo
> <pablo.de.lara.guarch@intel.com>
> Cc: dev@dpdk.org; Ryan, Brendan <brendan.ryan@intel.com>; Coyle, David
> <david.coyle@intel.com>; O'loingsigh, Mairtin
> <mairtin.oloingsigh@intel.com>
> Subject: [PATCH v2 0/2] net: add CRC run-time checks and
> AVX512/VPCLMULQDQ based CRC
> 
> This patchset makes two significant enhancements to the CRC modules of
> the rte_net library:
> 
> 1) Adds run-time selection of the optimal architecture-specific CRC path.
>    Previously the selection was solely made at compile-time, meaning it
>    could only be built and run on the same generation of CPU. Adding
>    run-time selection ability means this can be used from distro packages
>    and/or DPDK can be compiled on an older CPU and run on a newer CPU.
> 2) Adds an optimized CRC implementation based on the AVX512 and
>    VPCLMULQDQ instruction sets.
> 
> For further details, please see the commit messages of the individual
> patches.
> 
> v2:
> * Added support for run-time selection of optimal architecture-specific
>   CRC, based on v1 review comment.
> * Added full working AVX512/VPCLMULDQD support for CRC32-Ethernet and
>   CRC16-CCITT.
> 
> v1:
> * Initial version, with incomplete AVX512/VPCLMULDQD support for
>   CRC32-Ethernet only.
> 
> Mairtin o Loingsigh (2):
>   net: add run-time architecture specific CRC selection
>   net: add support for AVX512/VPCLMULQDQ based CRC
> 
>  app/test/test_crc.c                               |  11 +-
>  config/x86/meson.build                            |   6 +-
>  doc/guides/rel_notes/release_20_11.rst            |   6 +
>  lib/librte_net/meson.build                        |  89 ++++-
>  lib/librte_net/net_crc.h                          |  45 +++
>  lib/librte_net/net_crc_avx512.c                   | 424 ++++++++++++++++++++++
>  lib/librte_net/{net_crc_neon.h => net_crc_neon.c} |  27 +-
>  lib/librte_net/{net_crc_sse.h => net_crc_sse.c}   |  34 +-
>  lib/librte_net/rte_net_crc.c                      | 100 +++--
>  lib/librte_net/rte_net_crc.h                      |   4 +-
>  10 files changed, 674 insertions(+), 72 deletions(-)  create mode 100644
> lib/librte_net/net_crc.h  create mode 100644 lib/librte_net/net_crc_avx512.c
> rename lib/librte_net/{net_crc_neon.h => net_crc_neon.c} (95%)  rename
> lib/librte_net/{net_crc_sse.h => net_crc_sse.c} (94%)
> 
> --
> 2.12.3


I encountered a problem submitting the v2 patch and have submitted a v3

Regards,
Mairtin